Refrigerator-car



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RBFRIGERATOR GAR.

C. B.. HUTGHINS.

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C. B. HUTGHINS.

RBFRIGBRATOR GAR.

No. 339,185. Patented Apr. 6, 1886.

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N. Pncns Pnnmumngnphw. wnhiqm. n. c.

Ni STATES PATENT OFFICE.

UARLETON B. HUTOHINS, OF DETROIT, MICHIGAN.

REFRIGERATOR-CAR.

SPECFICATION forming part of Letters Patent No. 339,185, dated April 6.1886.

Application filed September 29. 1885. Serial No. 173,518.

To all whom t may concern: 1

Be it known that I, CARLETON B. HUTCH Ins, a citizen ot the United States, residing in Detroit, in the county of W'ayne and State of Michigan, have invented a new and useful Improvement in Refrigerator-Cars, of which the following is a specification.

rlhis invention consists in certain improvements in the construction of the double walls ot' refrigerator-cars and the base or platform upon which they rest, as will be more particularly pointed out in the claims.

In the accompanying drawings, which form a part oi" this specification, and in which similar letters of reference indicate like parts, Figure l is a central longitudinal vertical section of a car embodying my invention. Fig. 2 is a cross-section on line 2 2 of Fig. 1, and Fig. 3 an enlarged view of the stay.

In the drawings, A and B represent, respectivel y, the outside and inside walls of the car, cach composed of flat pieces or strips ab, laid one on top of another. These tlat pieces a b are built up straight, without any curve or camber, both at the side and end walls of the car. The requisite pitch or curve is given to the root' by employing a number of short and tapering pieces, a I), at the top of the side walls.

C represents the non-heat conducting or insulating material, preferably consisting of woolen rags cut into line shreds packed into and tlllin g the space between the walls A and B.

The walls A and B are provided with stays or braces c at intervals to connect and bind the same together. The ilat pieces a b should be nailed or spiked down as they are laid up one at a time.

D and D represent the longitudinal and cross frame-pieces of the base or platform of the car.

The longitudinal beams D, which extend from one end ot' the car to the other, are provided With cleats cl at their sides, upon which is laid the lower iioor, d. The insulating material O is then packed in on top of the door d', preferably to the thickness of about three inches, and then the fioor cl2 is laid thereon. The floors el d2 should be made of short matched boards, and the iloor d should be just iiush with the frame-work D D. Sheets of paper, felt, or like material d are next laid down,

(No model.l

andthen the floors d* and d5, with waterproof paper or like material d6 between the same. The outer wall, A, is laid directly upon the outer frame-pieces, D D', and the inner wall, B, should bc laid upon the outer margin of the door, as shown. lu this way the packing material C will rest directly upon the outer framepieces, D D. The space between the walls A B, which is `filled with the insulating material C, should preferably be about two and one-half inches.

Vertical tie-rods ll extend from the walls A B down through the outer frame-pieces, D D'. and serve to bind or press the iiat pieces a b iirmly together and to strengthen the walls. Similar tie-rods, E', extend horizontally across the car between the opposite walls, B B, and greatly serve to strengthen the whole structure. The beams F, which support the ice-pan, and also from which the carcasses or other articles to be transported are suspended, rest upon the inner walls, B B, at each cud. The crossbeams G of the root` also rest upon the inner walls, B B, at each end. These cross-beams G are furnished with cleats g at their sides, upon which rest the lower rooting-boards, g'. The insulating material O is then packed in until it is about flush with the upper surface of the beams G. Sheets of rooting or other paper, felt, or like material gt are next laid down, and then the roofing-boards g and g. Roofing composition and paper g5 are inserted between the rootingboards g3 and g. The crossbeams G, in connection with the cross tie-rods E, afford a very strong and rigid construction and serve to brace and strengthen the walls A B at the sides of the car.

The wall A is lined upon the outsidewith matched boards c', andthe wall B is lined upon the inside with similar matched boards, b.

According to my previous patent, No.. 245,070, the side dat pieces or strips, a b, forming the side walls of the car, are given a curve or camber from one end of the car to the other, in order to give the car the requisite strength and rigidity, and this at the date of said patented invention I deemed necessary; but I have since discovered that the dat pieces a b of the side walls may be laid up straight, without any curve or camber, by providing the walls A B with stays or braces at intervals be- IOO tween them, especially when in connection with a roof and iloor structure of the kind herein described, and the vertical and transverse tie-rods.

The stays c preferably consist of woodscrews, which extend through suitable threaded holes in the opposite strips, a b, of the walls A B. Holes are first bored through the walls A B with an ordinary auger, and the threads are then cut therein, when the screws may be easily and quickly applied. The screws' having thus a firm bearing in both the walls brace the same in both directions, both to and from each other, and hold them iirm and rigid. The screws being of wood contract and expand with the wooden walls in which they are inserted, and have no tendency to attract frost or moisture, and thus become rusty and imperfect or otherwise deteriorate the walls, as is the case where iron or metal is inserted in the wooden walls of refrigerator-cars; nor do the wood stays tend to conduct heat through the walls, as is the case with metal.

`I hereby expressly disclaim as forming no part of this application the subject-matter shown, described, and claimed in my pending application, No. 178,517, filed of even date with this application, and to which other application reference is hereby made.

I also wish it to be expressly understood that I am aware it is customary to use iron stay bolts or screws to strengthen the double walls of steam-boilers, &c., and that I make no claim, broadly, to the use of stay bolts or screws for strengthening double walls.

I claim- 1. The comb1nation,1n a refrigerator-car,

with the bottom or base frame-work, D D, of

double walls A B, consisting 'of straight ilat pieces a b, laid one on top of another, roofsupporting beams G, vertical tie-rods E, and cross tie-rods E, substantially as specified.

2. A refrigerator-car having double walls A B, each consisting of straight iiat strips laid one on top of another,without frame-work, and stays or braces c, extending between and connectingV said walls, substantially as specified.

3. The combination, with the double walls A B of a refrigerator-car, consisting of flat strips a b, laid one on top of another, of wooden stays or braces c, extending between and rigidly connecting said double walls A B, sub stantially as specified.

4. The combination, with the double walls of a refrigerator-car, of stays between the same consisting of wood-screws, forming rigid connections between the two parts of said double walls, substantially as specified.

5. The combination, with double walls of a refrigerator-car having screw-threaded holes therein, of wood-screw stays inserted in said threaded holes, substantially as specified.

CARLETON B. HUTCHINS.

Vitnesses:

H. M. MUNDAY, EDMUND ADcocK. 

